TS-3860 Avoid buffer overflow in debug builds
TS-3860 Avoid buffer overflow in debug builds

This will instead copy the header data from the HPACK struct
to the Hdr.

PSUdaemon/trafficserver,persiaAziz/trafficserver,vmamidi/trafficserver,chenglongwei/trafficserver,rpufky/trafficserver,duke8253/trafficserver,duke8253/trafficserver,reveller/trafficserver,bryancall/trafficserver,dyrock/trafficserver,pbchou/trafficserver,davidbz/trafficserver,bryancall/trafficserver,clearswift/trafficserver,chenglongwei/trafficserver,davidbz/trafficserver,rahmalik/trafficserver,pbchou/trafficserver,taoyunxing/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,PSUdaemon/trafficserver,chenglongwei/trafficserver,rpufky/trafficserver,persiaAziz/trafficserver,bryancall/trafficserver,reveller/trafficserver,vmamidi/trafficserver,dyrock/trafficserver,pbchou/trafficserver,PSUdaemon/trafficserver,taoyunxing/trafficserver,dyrock/trafficserver,duke8253/trafficserver,chenglongwei/trafficserver,davidbz/trafficserver,reveller/trafficserver,duke8253/trafficserver,dyrock/trafficserver,rahmalik/trafficserver,taoyunxing/trafficserver,chitianhao/trafficserver,persiaAziz/trafficserver,chitianhao/trafficserver,clearswift/trafficserver,chitianhao/trafficserver,chenglongwei/trafficserver,clearswift/trafficserver,reveller/trafficserver,persiaAziz/trafficserver,persiaAziz/trafficserver,taoyunxing/trafficserver,davidbz/trafficserver,dyrock/trafficserver,rahmalik/trafficserver,dyrock/trafficserver,persiaAziz/trafficserver,chitianhao/trafficserver,vmamidi/trafficserver,taoyunxing/trafficserver,clearswift/trafficserver,chitianhao/trafficserver,SolidWallOfCode/trafficserver,duke8253/trafficserver,taoyunxing/trafficserver,rahmalik/trafficserver,chitianhao/trafficserver,PSUdaemon/trafficserver,chenglongwei/trafficserver,taoyunxing/trafficserver,rpufky/trafficserver,taoyunxing/trafficserver,pbchou/trafficserver,davidbz/trafficserver,rahmalik/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,reveller/trafficserver,SolidWallOfCode/trafficserver,SolidWallOfCode/trafficserver,clearswift/trafficserver,chitianhao/trafficserver,PSUdaemon/trafficserver,reveller/trafficserver,persiaAziz/trafficserver,PSUdaemon/trafficserver,SolidWallOfCode/trafficserver,bryancall/trafficserver,rpufky/trafficserver,davidbz/trafficserver,rpufky/trafficserver,persiaAziz/trafficserver,bryancall/trafficserver,clearswift/trafficserver,reveller/trafficserver,clearswift/trafficserver,SolidWallOfCode/trafficserver,bryancall/trafficserver,vmamidi/trafficserver,chenglongwei/trafficserver,rahmalik/trafficserver,rahmalik/trafficserver,reveller/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,pbchou/trafficserver,pbchou/trafficserver,reveller/trafficserver,rahmalik/trafficserver,SolidWallOfCode/trafficserver,dyrock/trafficserver,PSUdaemon/trafficserver,SolidWallOfCode/trafficserver,rahmalik/trafficserver,duke8253/trafficserver,clearswift/trafficserver,clearswift/trafficserver,vmamidi/trafficserver,chenglongwei/trafficserver,taoyunxing/trafficserver,rpufky/trafficserver,rpufky/trafficserver